A115567 - cp's OEIS frontend

A115567 a(n) = C(n,6) + C(n,5) + C(n,4) + C(n,3) + C(n,2) + C(n,1).

n	a(n)
0	0
1	1
2	3
3	7
4	15
5	31
6	63
7	126
8	246
9	465
10	847
11	1485
12	2509
13	4095
14	6475
15	9948
16	14892
17	21777
18	31179
19	43795
20	60459
21	82159
22	110055
23	145498
24	190050
25	245505
26	313911
27	397593
28	499177
29	621615
30	768211
31	942648
32	1149016
33	1391841
34	1676115
35	2007327
36	2391495

[0, 1, 3, 7, 15, 31, 63, 126, 246, 465, 847, 1485, 2509, 4095, 6475, 9948, 14892, 21777, 31179, 43795, 60459, 82159, 110055, 145498, 190050, 245505, 313911, 397593, 499177, 621615, 768211, 942648, 1149016, 1391841, 1676115, 2007327, 2391495]

cp's OEIS Frontend

A115567 a(n) = C(n,6) + C(n,5) + C(n,4) + C(n,3) + C(n,2) + C(n,1).

Table of values

List of values